NONCONSOLIDATED AFFILIATES NONCONSOLIDATED AFFILIATES (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Gain (Loss) on Sale of Equity Investments		$ 4	$ 0	$ 0
Equity Method Investments		0	14
Proceeds from Equity Method Investment, Distribution		0	1	2
Undistributed Earnings of Nonconsolidated Affiliates		0	9
Proceeds from Sale of Equity Method Investments	$ 22	$ 22	$ 0	$ 0
Other Operating Income (Expense) [Member]
Schedule of Equity Method Investments [Line Items]
Gain (Loss) on Sale of Equity Investments	$ (4)